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Atomic Structure of Osmium and Protactinium

Osmium
Protactinium
Atomic Structure of Protactinium and Osmium


Atomic Properties
Atomic Number
76   
40
91   
27
Electron Configuration
[Xe] 4f14 5d6 6s2   
[Rn] 5f2 6d1 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Tetragonal (TETR)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   
Atom
  
  
Number of Protons
76   
39
91   
27
Number of Neutrons
114   
25
122   
21
Number of Electrons
76   
39
91   
27
Radius of an Atom
  
  
Atomic Radius
133.80 pm   
99+
163.00 pm   
25
Covalent Radius
Not Available   
200.00 pm   
11
Van der Waals Radius
216.00 pm   
24
243.00 pm   
11
Atomic Weight
190.23 amu   
35
231.04 amu   
24
Atomic Volume
8.49 cm3/mol   
99+
15.00 cm3/mol   
34
Adjacent Atomic Numbers
  
  
Previous Element
Rhenium
  
Thorium
  
Next Element
Iridium
  
Uranium
  
Valence Electron Potential
91.40 (-eV)   
12
92.00 (-eV)   
11
Lattice Constant
273.44 pm   
99+
392.50 pm   
23
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.58   
14
Not Available   
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